Optical constants

Refractive index of L-LAH86 (OHARA)

L-LAH86: n,k 0.365–2.325 µm

Data
formula 2 + tabulated k
Range
0.365–2.325 µm
Temperature
298 K
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.365–2.325 µm
Refractive index n
1.90269
Extinction coefficient k
2.20158e-08
Permittivity ε1
3.62024
Permittivity ε2
8.37786e-08
Absorption coefficient α
0.00470828 cm⁻¹
Penetration depth δ = λ/(2πk)
4.24784e+09 nm
Abbe number Vd
31.005
Chromatic dispersion dn/dλ
-0.146931 µm⁻¹
Group index ng
1.98903
Group velocity dispersion
292.198 fs²/mm
Dispersion parameter D
-1594.1 ps/(nm·km)
Photon energy
2.11001 eV

ε = (n + ik)², α = 4πk/λ, ng = n − λ dn/dλ, GVD = λ³/(2πc²) d²n/dλ², D = −(λ/c) d²n/dλ². Group-velocity dispersion is given for formula data only.

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith
import lightsmith as ls

# L-LAH86 (OHARA): L-LAH86
ohara_l_lah86 = ls.fetch_refractiveindex("specs", "OHARA-optical", "L-LAH86", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(ohara_l_lah86.range_nm)  # (365, 2325) nm
eps = ohara_l_lah86.eps([633])  # complex permittivity

Downloads the original record once (pinned to the imported snapshot) and caches it.

Lightsmith is open source (MIT): Mie, T-matrix, BEM, DDA, FDTD, RCWA, TMM, mode solvers and inverse design behind one spec, on CPU or GPU. GitHub.

Dispersion formula

Sellmeier (C in µm²) (formula 2), λ in µm
n2−1=2.11102709λ2λ2−0.0120714135+0.370368094λ2λ2−0.0532464416+1.62687484λ2λ2−109.166396

Valid from 0.365 to 2.325 µm.

Coefficients as stored
CiValue
C10.0
C22.11102709
C30.0120714135
C40.370368094
C50.0532464416
C61.62687484
C7109.166396

Comments and conditions

Low Softening Temperature

Conditions

temperature
298 K

Properties

thermal dispersion
type: formula A, coefficients: 2.69e-06 1.07e-08 -9.48e-12 8.91e-07 1.11e-09 0.274
nd
1.902699
Vd
31.005320
density
value: 4900
thermal expansion
value: 6.1e-06, temperature range: 243 343
dPgF
0.003
resistance
acid: 4.2; climatic: 3.0; phosphate: 2.0

Thermo-optic coefficient

  • Schott thermal-dispersion model (reference temperature 298.0 K): dn/dT = 3.72e-06 K⁻¹ at 633 nm, dn/dT = 2.15e-06 K⁻¹ at 1310 nm, dn/dT = 2.03e-06 K⁻¹ at 1550 nm

References

Cite

OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp); See also OHARA glass data sheets; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

Computed on 422 wavelengths, the same grid as the API and the library
L-LAH86 (OHARA), L-LAH86: n and k versus wavelength
λ (µm)nk
0.3651.9840166.165100e-06
0.3666981.9825235.344415e-06
0.3684031.9810544.519912e-06
0.371.9797073.748100e-06
0.3701171.979613.725411e-06
0.3718381.9781893.391382e-06
0.3735681.9767923.055798e-06
0.3753061.9754172.718654e-06
0.3770511.9740642.379942e-06
0.3788051.9727332.039654e-06
0.381.9718421.807800e-06
0.3805671.9714241.763103e-06
0.3823371.9701341.623562e-06
0.3841161.9688651.483373e-06
0.3859021.9676151.342531e-06
0.3876971.9663851.201035e-06
0.38951.9651741.058880e-06
0.391.9648421.019500e-06
0.3913121.9639819.686140e-07
0.3931321.9628058.980278e-07
0.3949611.9616488.271134e-07
0.3967981.9605087.558690e-07
0.3986441.9593846.842933e-07
0.41.9585726.316900e-07
0.4004981.9582776.239044e-07
0.4023611.9571865.947694e-07
0.4042321.9561115.654990e-07
0.4061121.9550525.360924e-07
0.4080011.9540085.065490e-07
0.4098991.9529784.768682e-07
0.4118061.9519644.470494e-07
0.4137211.9509634.170918e-07
0.4156451.9499773.869949e-07
0.4175791.9490043.567580e-07
0.4195211.9480453.263805e-07
0.421.9478113.188900e-07
0.4214721.9470993.099960e-07
0.4234331.9461662.981541e-07
0.4254021.9452452.862572e-07
0.4273811.9443382.743050e-07
0.4293691.9434422.622971e-07
0.4313661.9425592.502334e-07
0.4333721.9416872.381136e-07
0.4353881.9408272.259374e-07
0.4374131.9399782.137046e-07
0.4394481.939142.014149e-07
0.441.9389161.980800e-07
0.4414921.9383141.935990e-07
0.4435451.9374981.874312e-07
0.4456091.9366921.812348e-07
0.4476811.9358981.750095e-07
0.4497641.9351131.687553e-07
0.4518561.9343381.624719e-07
0.4539571.9335741.561594e-07
0.4560691.9328191.498175e-07
0.458191.9320731.434461e-07
0.461.9314471.380100e-07
0.4603211.9313371.373465e-07
0.4624621.930611.329248e-07
0.4646131.9298921.284825e-07
0.4667751.9291841.240196e-07
0.4689461.9284831.195359e-07
0.4711271.9277921.150314e-07
0.4733181.9271091.105059e-07
0.475521.9264341.059593e-07
0.4777321.9257681.013916e-07
0.4799541.9251099.680267e-08
0.481.9250969.670700e-08
0.4821861.9244599.403614e-08
0.4844291.9238169.129599e-08
0.4866821.9231818.854309e-08
0.4889461.9225548.577739e-08
0.491221.9219348.299883e-08
0.4935051.9213228.020734e-08
0.49581.9207167.740287e-08
0.4981071.9201187.458536e-08
0.51.9196347.227200e-08
0.5004231.9195277.192037e-08
0.5027511.9189436.998717e-08
0.5050891.9183656.804499e-08
0.5074391.9177946.609377e-08
0.5097991.917236.413347e-08
0.512171.9166736.216406e-08
0.5145531.9161216.018549e-08
0.5169461.9155765.819771e-08
0.519351.9150375.620069e-08
0.5217661.9145055.419438e-08
0.5241931.9139785.217873e-08
0.5266311.9134575.015372e-08
0.5290811.9129424.811928e-08
0.5315421.9124334.607538e-08
0.5340141.911934.402197e-08
0.5364981.9114324.195901e-08
0.5389931.910943.988646e-08
0.54151.9104533.780427e-08
0.5440191.9099713.571239e-08
0.5465491.9094953.361078e-08
0.5490921.9090243.149939e-08
0.551.9088583.074500e-08
0.5516461.9085583.036294e-08
0.5542121.9080972.976724e-08
0.5567891.9076412.916877e-08
0.5593791.9071912.856752e-08
0.5619811.9067442.796348e-08
0.5645951.9063032.735662e-08
0.5672211.9058672.674694e-08
0.5698591.9054352.613442e-08
0.572511.9050072.551906e-08
0.5751731.9045852.490083e-08
0.5778481.9041662.427973e-08
0.5805361.9037522.365574e-08
0.5832361.9033432.302885e-08
0.5859491.9029372.239904e-08
0.5886751.9025362.176630e-08
0.5914131.9021392.113062e-08
0.5941641.9017472.049198e-08
0.5969271.9013581.985037e-08
0.5997041.9009731.920577e-08
0.61.9009321.913700e-08
0.6024931.9005921.895769e-08
0.6052961.9002151.875614e-08
0.6081111.8998421.855366e-08
0.610941.8994731.835023e-08
0.6137811.8991071.814586e-08
0.6166361.8987451.794053e-08
0.6195041.8983871.773425e-08
0.6223861.8980321.752701e-08
0.6252811.8976811.731881e-08
0.6281891.8973341.710964e-08
0.6311111.896991.689949e-08
0.6340471.8966491.668837e-08
0.6369961.8963111.647627e-08
0.6399591.8959771.626318e-08
0.6429351.8956461.604910e-08
0.6459261.8953191.583402e-08
0.648931.8949941.561794e-08
0.651.894881.554100e-08
0.6519491.8946731.515255e-08
0.6549811.8943551.454801e-08
0.6580281.894041.394067e-08
0.6610881.8937281.333050e-08
0.6641631.8934191.271749e-08
0.6672521.8931131.210163e-08
0.6703561.8928091.148291e-08
0.6734741.8925091.086131e-08
0.6766071.8922111.023681e-08
0.6797541.8919179.609418e-09
0.6829151.8916258.979102e-09
0.6860921.8913358.345855e-09
0.6892831.8910497.709662e-09
0.6924891.8907657.070510e-09
0.695711.8904836.428385e-09
0.6989461.8902045.783273e-09
0.71.8901155.573200e-09
0.7021971.8899285.590695e-09
0.7054631.8896555.616700e-09
0.7087451.8893835.642826e-09
0.7120411.8891145.669073e-09
0.7153531.8888485.695443e-09
0.7186811.8885845.721935e-09
0.7220231.8883225.748551e-09
0.7253821.8880635.775290e-09
0.7287561.8878065.802154e-09
0.7321461.8875515.829143e-09
0.7355511.8872995.856257e-09
0.7389721.8870485.883497e-09
0.7424091.88685.910864e-09
0.7458631.8865545.938358e-09
0.7493321.886315.965981e-09
0.7528171.8860685.993731e-09
0.7563191.8858296.021611e-09
0.7598371.8855916.049621e-09
0.7633711.8853556.077760e-09
0.7669221.8851216.106031e-09
0.7704891.884896.134433e-09
0.7740731.884666.162967e-09
0.7776731.8844326.191634e-09
0.781291.8842066.220434e-09
0.7849241.8839816.249369e-09
0.7885751.8837596.278437e-09
0.7922431.8835386.307641e-09
0.7959281.883326.336981e-09
0.799631.8831026.366458e-09
0.81.8830816.369400e-09
0.803351.8828876.396071e-09
0.8070861.8826736.425822e-09
0.810841.8824616.455712e-09
0.8146121.8822516.485740e-09
0.8184011.8820426.515909e-09
0.8222081.8818356.546217e-09
0.8260321.881636.576667e-09
0.8298741.8814266.607258e-09
0.8337341.8812246.637991e-09
0.8376121.8810236.668868e-09
0.8415081.8808236.699888e-09
0.8454221.8806256.731052e-09
0.8493551.8804296.762361e-09
0.8533051.8802346.793816e-09
0.8572741.8800416.825418e-09
0.8612621.8798486.857166e-09
0.8652681.8796586.889062e-09
0.8692921.8794686.921106e-09
0.8733361.879286.953299e-09
0.8773981.8790936.985642e-09
0.8814791.8789087.018136e-09
0.8855791.8787247.050780e-09
0.8896981.8785417.083577e-09
0.8938361.8783597.116526e-09
0.8979941.8781787.149628e-09
0.91.8780927.165600e-09
0.9021711.8779997.182882e-09
0.9063671.8778217.216289e-09
0.9105831.8776447.249851e-09
0.9148181.8774687.283569e-09
0.9190731.8772947.317444e-09
0.9233481.877127.351476e-09
0.9276431.8769487.385667e-09
0.9319581.8767767.420017e-09
0.9362931.8766067.454527e-09
0.9406481.8764377.489197e-09
0.9450231.8762697.524029e-09
0.9494191.8761017.559022e-09
0.9538351.8759357.594178e-09
0.9582711.875777.629498e-09
0.9627291.8756057.664982e-09
0.9672071.8754427.700631e-09
0.9717051.875287.736446e-09
0.9762251.8751187.772428e-09
0.9807661.8749577.808577e-09
0.9853281.8747987.844894e-09
0.9899111.8746397.881380e-09
0.9945151.8744817.918035e-09
0.9991411.8743237.954861e-09
11.8742947.961700e-09
1.003791.8741677.991863e-09
1.008461.8740118.029037e-09
1.013151.8738568.066384e-09
1.017861.8737028.103905e-09
1.022591.8735498.141600e-09
1.027351.8733968.179471e-09
1.032131.8732448.217518e-09
1.036931.8730938.255741e-09
1.041751.8729438.294143e-09
1.04661.8727938.332723e-09
1.051471.8726448.371483e-09
1.056361.8724958.410423e-09
1.061271.8723478.449544e-09
1.066211.87228.488847e-09
1.071171.8720538.528333e-09
1.076151.8719078.568002e-09
1.081151.8717628.607856e-09
1.086181.8716178.647895e-09
1.091241.8714728.688121e-09
1.096311.8713288.728534e-09
1.101411.8711858.769134e-09
1.106531.8710428.809924e-09
1.111681.87098.850903e-09
1.116851.8707588.892073e-09
1.122051.8706178.933434e-09
1.127271.8704768.974988e-09
1.132511.8703359.016735e-09
1.137781.8701959.058676e-09
1.143071.8700559.100813e-09
1.148391.8699169.143145e-09
1.153731.8697779.185674e-09
1.159091.8696389.228401e-09
1.164481.86959.271327e-09
1.16991.8693629.314452e-09
1.175341.8692259.357778e-09
1.180811.8690889.401306e-09
1.18631.8689519.445036e-09
1.191821.8688149.488969e-09
1.197361.8686789.533107e-09
1.21.8686139.554100e-09
1.202931.8685429.577443e-09
1.208531.8684069.621978e-09
1.214151.868279.666720e-09
1.21981.8681359.711671e-09
1.225471.8689.756831e-09
1.231171.8678659.802200e-09
1.23691.867739.847781e-09
1.242651.8675959.893574e-09
1.248431.8674619.939579e-09
1.254241.8673279.985799e-09
1.260071.8671921.003223e-08
1.265931.8670581.007888e-08
1.271821.8669241.012575e-08
1.277741.8667911.017284e-08
1.283681.8666571.022014e-08
1.289651.8665231.026767e-08
1.295651.866391.031541e-08
1.301671.8662561.036338e-08
1.307731.8661221.041157e-08
1.313811.8659891.045999e-08
1.319921.8658551.050863e-08
1.326061.8657221.055749e-08
1.332231.8655881.060659e-08
1.338431.8654551.065591e-08
1.344651.8653211.070546e-08
1.350911.8651871.075524e-08
1.357191.8650541.080526e-08
1.36351.864921.085550e-08
1.369851.8647861.090598e-08
1.376221.8646521.095670e-08
1.382621.8645181.100765e-08
1.389051.8643831.105884e-08
1.395511.8642491.111026e-08
1.41.8641561.114600e-08
1.4021.8641141.128951e-08
1.408521.863981.175721e-08
1.415071.8638451.222708e-08
1.421661.8637091.269914e-08
1.428271.8635741.317340e-08
1.434911.8634381.364986e-08
1.441591.8633031.412854e-08
1.448291.8631671.460944e-08
1.455031.863031.509258e-08
1.46181.8628941.557797e-08
1.468591.8627571.606561e-08
1.475431.862621.655553e-08
1.482291.8624821.704772e-08
1.489181.8623441.754220e-08
1.496111.8622061.803898e-08
1.503071.8620671.853807e-08
1.510061.8619291.903949e-08
1.517081.8617891.954323e-08
1.524141.861652.004932e-08
1.531231.8615092.055777e-08
1.538351.8613692.106857e-08
1.545511.8612282.158176e-08
1.55271.8610872.209733e-08
1.559921.8609452.261530e-08
1.567171.8608022.313568e-08
1.574461.860662.365847e-08
1.581791.8605162.418370e-08
1.589141.8603722.471138e-08
1.596541.8602282.524151e-08
1.61.860162.549000e-08
1.603961.8600832.726384e-08
1.611421.8599383.060467e-08
1.618921.8597923.396105e-08
1.626451.8596453.733304e-08
1.634011.8594984.072071e-08
1.641611.859354.412413e-08
1.649251.8592014.754339e-08
1.656921.8590525.097856e-08
1.664631.8589025.442970e-08
1.672371.8587525.789689e-08
1.680151.8586016.138021e-08
1.687961.8584496.487973e-08
1.695811.8582966.839553e-08
1.70371.8581437.192769e-08
1.711631.8579897.547627e-08
1.719591.8578347.904136e-08
1.727591.8576788.262303e-08
1.735621.8575228.622136e-08
1.743691.8573648.983642e-08
1.751811.8572069.346830e-08
1.759951.8570479.711708e-08
1.768141.8568871.007828e-07
1.776361.8567271.044656e-07
1.784631.8565651.081655e-07
1.792931.8564031.118827e-07
1.81.8562641.150500e-07
1.801271.8562391.169764e-07
1.809641.8560751.297211e-07
1.818061.855911.425250e-07
1.826521.8557431.553884e-07
1.835011.8555761.683117e-07
1.843551.8554081.812951e-07
1.852121.8552381.943389e-07
1.860741.8550682.074434e-07
1.869391.8548972.206088e-07
1.878091.8547242.338355e-07
1.886821.854552.471237e-07
1.89561.8543762.604736e-07
1.904421.85422.738857e-07
1.913281.8540232.873602e-07
1.922181.8538453.008973e-07
1.931121.8536653.144974e-07
1.94011.8534853.281608e-07
1.949121.8533033.418877e-07
1.958191.853123.556785e-07
1.96731.8529353.695334e-07
1.976451.852753.834527e-07
1.985641.8525633.974368e-07
1.994881.8523754.114860e-07
21.852274.192800e-07
2.004161.8521854.408971e-07
2.013481.8519944.893957e-07
2.022841.8518025.381199e-07
2.032251.8516085.870707e-07
2.04171.8514136.362491e-07
2.05121.8512166.856563e-07
2.060741.8510187.352934e-07
2.070331.8508187.851613e-07
2.079961.8506178.352611e-07
2.089631.8504158.855940e-07
2.099351.8502119.361610e-07
2.109121.8500059.869632e-07
2.118931.8497971.038002e-06
2.128781.8495881.089278e-06
2.138681.8493781.140792e-06
2.148631.8491651.192546e-06
2.158621.8489521.244541e-06
2.168671.8487361.296777e-06
2.178751.8485181.349257e-06
2.188891.8482991.401981e-06
2.199071.8480781.454949e-06
2.21.8480581.459800e-06
2.20931.8478551.658047e-06
2.219571.8476311.877192e-06
2.22991.8474042.097355e-06
2.240271.8471762.318543e-06
2.250691.8469452.540760e-06
2.261161.8467132.764010e-06
2.271671.8464792.988299e-06
2.282241.8462433.213630e-06
2.292861.8460053.440010e-06
2.303521.8457643.667443e-06
2.314241.8455223.895934e-06
2.3251.8452784.125488e-06

Optical transmission calculator

Free-standing sample in vacuum, normal incidence
Method
Transmittance T
—
Reflectance R
—

Fresnel reflection calculator

Direction
Rp
—
Rs
—
R = (Rp+Rs)/2
—
Phase φp
—
Phase φs
—
Brewster angle θB
—
Critical angle θC
—